Continuous stamping die for dishwasher hinge

Abstract

The utility model relates to the technical field of stamping dies, and discloses a dish-washing machine hinge continuous stamping die which comprises a lower die, the lower die comprises a lower die base, and a lower die plate is arranged above the lower die base; the upper mold comprises an upper mold base, an upper mold plate is mounted on the upper mold base, and an upper movable plate is arranged below the upper mold plate; the punching die further comprises a guide mechanism, and the guide mechanism comprises two sets of punching punches arranged in the upper die base and two sets of guide pins arranged in the upper movable plate. The correcting mechanism and the guiding mechanism are arranged and used for guiding and limiting a stamped plate, and the situation that when the plate is stamped for a long time, accumulated deviation of the plate occurs, the punching position of a hinge deviates, and the stamping accuracy is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, and more specifically, it relates to a continuous stamping die for a dishwasher hinge. Background Art

[0002] A dishwasher is a device for automatically cleaning and drying tableware, kitchen utensils and other kitchen supplies. It uses hot water and detergent to remove food residues and grease, and then uses a heating element or a ventilation system to dry the washed tableware. Among them, the dishwasher hinge is an important component on the dishwasher door. It connects the door and the dishwasher main body, enabling the door to open and close. The dishwasher hinge is usually made of metal or plastic materials and has good load-bearing capacity and corrosion resistance. When manufacturing and processing the hinge, a continuous stamping die is required to punch and cut the dishwasher hinge.

[0003] However, when stamping and processing the sheet metal, affected by various factors, such as friction, gravity, and feeding speed, etc., these factors may cause a slight deviation in the position of the sheet metal on the conveying path. With the continuous accumulation of stamping times, the deviations gradually stack up, forming a significant cumulative deviation, which leads to the deviation of the punching position of the hinge and affects the stamping accuracy of the hinge. Summary of the Utility Model

[0004] The utility model provides a continuous stamping die for a dishwasher hinge, which solves the technical problem that in the related art, with the continuous accumulation of stamping times, the deviations gradually stack up, forming a significant cumulative deviation, which leads to the deviation of the punching position of the hinge and affects the stamping accuracy of the hinge.

[0005] The utility model provides a continuous stamping die for a dishwasher hinge, including a lower die, the lower die includes a lower die base, and a lower template is arranged above the lower die base; an upper die, the upper die includes an upper die base, and an upper template is installed on the upper die base, and an upper movable plate is arranged below the upper template; further including: a correction mechanism, the correction mechanism includes guide frames installed on both sides of the lower template, and a plurality of connecting shafts are connected by bearings on the guide frames, and guiding rollers are installed on the connecting shafts for guiding the feeding path of the stamping sheet metal; a guiding and correcting mechanism, the guiding and correcting mechanism includes two groups of punching heads arranged inside the upper die base and two groups of guiding pins arranged inside the upper movable plate, and alternating components are arranged on the two groups of punching heads and the two groups of guiding pins respectively for alternately using the two groups of punching heads and the two groups of guiding pins.

[0006] As a further optimized scheme of the utility model, a guide groove is annularly arranged on the guiding roller, and the guide groove is used for guiding and limiting the edge of the stamping sheet metal.

[0007] As a further optimized solution of the utility model, limiting frames are installed on both of the two guiding rollers, and the limiting frames are used for guiding and limiting the punching plate in the up and down directions.

[0008] As a further optimized solution of the utility model, the alternating assembly includes brackets respectively arranged on the upper template and the upper movable plate, and a connecting rod is rotatably connected to the brackets through a rotating shaft. Chutes are arranged on both sides inside the connecting rod, and sliding rods are slidably connected in the chutes. A connecting frame is installed on the sliding rods, and the connecting frame is fixedly connected to the corresponding punching head and the alignment pin respectively. A connecting block is also installed on the connecting frame.

[0009] As a further optimized solution of the utility model, a first slot is opened in the upper template, a second slot is opened in the upper movable plate, the inner parts of the first slot and the second slot are respectively fixedly connected to the brackets, fixing frames are installed in both the first slot and the second slot, a threaded rod is rotatably connected to the fixing frames through bearings, a threaded sleeve is threadedly connected to the threaded rod, and the threaded sleeve is fixedly connected to a corresponding group of connecting blocks respectively.

[0010] As a further optimized solution of the utility model, gears are installed at one ends of the threaded rods, a tooth column is meshed between the gears, a rotating shaft is installed in the tooth column, and the rotating shaft is rotatably connected to the upper template through a bearing. A driving motor is installed on the upper die base, and the output shaft of the driving motor is fixedly connected to the rotating shaft.

[0011] The beneficial effects of the utility model are as follows: through the setting of the correction mechanism and the alignment mechanism, the utility model is used for guiding and limiting the punching plate, avoiding the cumulative deviation of the plate during long-term punching processing of the plate, resulting in the deviation of the punching position of the hinge and affecting the punching accuracy. At the same time, by alternately using the punching head and the alignment pin, the service life of the punching head and the alignment pin is prolonged, avoiding the problem that the punching head and the alignment pin are worn after long-term use, resulting in inaccurate positioning of the punching plate and deviation of the moving position. Description of the Drawings

[0012] Figure 1 is the three-dimensional structural schematic diagram of the utility model;

[0013] Figure 2 is the structural schematic diagram of the separation state of the upper die and the lower die of the utility model;

[0014] Figure 3 is the partial three-dimensional sectional structural schematic diagram of the utility model;

[0015] Figure 4 is the three-dimensional structural schematic diagram of the lower template, the correction mechanism and the alignment mechanism of the utility model;

[0016] Figure 5 It is a schematic three-dimensional structure diagram of the correction mechanism of the present utility model.

[0017] In the figure: 1. Lower die; 11. Lower die base; 12. Lower support; 13. Lower template; 2. Upper die; 21. Upper die base; 22. Upper template; 221. First slotted opening; 23. Upper movable plate; 231. Second slotted opening; 24. Nitrogen spring; 3. Correction mechanism; 31. Guide frame; 32. Connecting shaft; 33. Guide roller; 34. Guide groove; 35. Limit frame; 36. Ball; 4. Alignment mechanism; 41. Punching punch; 42. Alignment pin; 43. Bracket; 44. Connecting rod; 45. Slide groove; 46. Slide bar; 47. Connecting frame; 48. Connecting block; 49. Fixed frame; 410. Threaded rod; 411. Threaded sleeve; 412. Gear; 413. Tooth column; 414. Rotating shaft; 415. Driving motor; 416. Compression spring. Detailed implementation manners

[0018] Now, the subject matter described herein will be discussed with reference to exemplary implementation manners. It should be understood that discussing these implementation manners is only to enable those skilled in the art to better understand and thus implement the subject matter described herein. Without departing from the scope of protection of the content of this specification, changes can be made to the functions and arrangements of the elements discussed. Each example can omit, substitute, or add various processes or components as needed. Additionally, the features described for some examples can also be combined in other examples.

[0019] According to the attached Figure 1 and the attached Figure 2 As shown, a continuous stamping die for a dishwasher hinge includes a lower die 1 and an upper die 2. A correction mechanism 3 and an alignment mechanism 4 are provided between the lower die 1 and the upper die 2 to guide and limit the stamping sheet, so as to avoid cumulative deviation of the sheet during long-term stamping processing of the sheet, resulting in offset of the punching position of the hinge and affecting the stamping accuracy.

[0020] Among them, the lower die 1 includes a lower die base 11, and a lower support 12 is installed on the lower die base 11, and a lower template 13 is installed on the lower support 12; the upper die 2 includes an upper die base 21, and an upper template 22 is installed on the upper die base 21. An upper movable plate 23 is provided below the upper template 22, and a nitrogen spring 24 is installed between the upper movable plate 23 and the upper die base 21.

[0021] It should be understood that in the prior art, the nitrogen spring 24 is a special spring for the die, which is an elastic component with high-pressure nitrogen as the working medium. The nitrogen spring 24 has the advantages of small volume, large elastic force, long stroke, stable operation, precise manufacturing, long service life, gentle elastic force curve, and no need for pre-tightening, etc.

[0022] According to the appendix Figure 3 As shown in the figure, the correction mechanism 3 includes guide frames 31 installed on both sides of the lower template 13, and a plurality of connecting shafts 32 are connected to the guide frames 31 by bearings. Guide rollers 33 are installed on the connecting shafts 32 for guiding the feeding path of the stamping sheet. Among them, guide grooves 34 are annularly formed on the guide rollers 33, and the guide grooves 34 are used for guiding and limiting the edges of the stamping sheet.

[0023] Furthermore, limit frames 35 are installed on two of the guide rollers 33. Through the setting of the limit frames 35, the up-and-down position jitter of the stamping sheet at the feeding position is avoided, thereby reducing the situation of sheet offset. Moreover, a plurality of spherical grooves are formed on the limit frames 35, and balls 36 are movably connected in the spherical grooves. Through the setting of the balls 36, it is avoided that the stamping sheet contacts the upper die 2 when jitter occurs, thereby preventing scratches or damages on the surface of the sheet.

[0024] According to the appendix Figure 4 and the appendix Figure 5 As shown in the figure, the alignment mechanism 4 includes two groups of punching heads 41 arranged inside the upper die base 21 and two groups of alignment pins 42 arranged inside the upper movable plate 23. Alternating components are provided on the two groups of punching heads 41 and the two groups of alignment pins 42 respectively for alternately using the two groups of punching heads 41 and the two groups of alignment pins 42.

[0025] Specifically, the alternating component includes brackets 43 respectively arranged on the upper template 22 and the upper movable plate 23. A connecting rod 44 is rotatably connected to the brackets 43 through a rotating shaft. Sliding grooves 45 are formed on both sides inside the connecting rod 44, and sliding rods 46 are slidably connected in the sliding grooves 45. A connecting frame 47 is installed on the sliding rods 46, and the connecting frame 47 is fixedly connected to the corresponding punching head 41 and alignment pin 42 respectively. A connecting block 48 is also installed on the connecting frame 47.

[0026] It should be noted that the initial state of the connecting rod 44 is inclined. When a group of punching heads 41 and alignment pins 42 move downward, the other group of punching heads 41 and alignment pins 42 move upward under the action of the rotating shaft connection of the connecting rod 44, so as to facilitate alternate use.

[0027] Further, a first slot 221 is formed in the upper template 22, and a second slot 231 is formed in the upper movable plate 23. The inner parts of the first slot 221 and the second slot 231 are respectively fixedly connected to the support 43. Fixing frames 49 are installed in both the first slot 221 and the second slot 231. A threaded rod 410 is rotatably connected to the fixing frame 49 by bearings. A threaded sleeve 411 is threadedly connected to the threaded rod 410, and the threaded sleeve 411 is fixedly connected to a corresponding set of connecting blocks 48. One end of each threaded rod 410 is provided with a gear 412, and a tooth column 413 is meshed between the gears 412. A rotating shaft 414 is installed in the tooth column 413, and the rotating shaft 414 is rotatably connected to the upper template 22 by bearings. A driving motor 415 is installed on the upper die base 21, and the output shaft of the driving motor 415 is fixedly connected to the rotating shaft 414.

[0028] It should be noted that when the driving motor 415 is controlled to rotate, the tooth column 413 rotates synchronously. Under the action of the meshing connection between the gear 412 and the tooth column 413, the threaded rod 410 drives the threaded sleeve 411 to move.

[0029] When the threaded sleeve 411 moves upward, the connecting rod 44 on the corresponding side moves upward synchronously. Under the action of the shaft connection, the other end of the connecting rod 44 moves downward, controlling the other set of punching heads 41 and alignment pins 42 to move downward, so as to replace the punching heads 41 and alignment pins 42 by controlling the downward inclination direction of the connecting rod 44.

[0030] When the upper die 2 and the lower die 1 perform a stamping operation, the upper movable plate 23 floats. At this time, the gear 412 on the upper movable plate 23 slides up and down outside the tooth column 413, so that when the upper movable plate 23 moves up and down, the gear 412 and the tooth column 413 can be normally meshed.

[0031] According to the attached Figure 4 and the attached Figure 5 As shown, in order to assist the punching heads 41 and alignment pins 42 in performing a reset movement, in this embodiment, compression springs 416 are respectively provided on the punching heads 41 and alignment pins 42. One end of a set of compression springs 416 located on the punching head 41 is installed in the first slot 221, and the other end is installed on the punching head 41. One end of the other set of compression springs 416 located on the alignment pin 42 is installed in the second slot 231, and the other end is installed on the alignment pin 42.

[0032] Among them, the initial state of the compression spring 416 is a fully contracted state. When the compression spring 416 is in a fully expanded state, it is in a stretched state. When the compression spring 416 is in a fully expanded state, the compression spring 416 has a restoring force to contract.

[0033] The above-described embodiments of the specific implementation manners have been described. However, these embodiments are not limited to the above specific implementation manners. The above specific implementation manners are merely illustrative and not restrictive. Under the inspiration of these embodiments, those of ordinary skill in the art can also make many forms, all of which fall within the protection scope of these embodiments.

Claims

1. A continuous stamping die for a dishwasher hinge, comprising: A lower die (1), the lower die (1) includes a lower die base (11), and a lower template (13) is provided above the lower die base (11); An upper die (2), the upper die (2) includes an upper die base (21), and an upper template (22) is installed on the upper die base (21), and an upper movable plate (23) is provided below the upper template (22); It is characterized in that it further includes: A correction mechanism (3), the correction mechanism (3) includes guide frames (31) installed on both sides of the lower template (13), and a plurality of connecting shafts (32) are connected by bearings on the guide frames (31), and guide rollers (33) are installed on the connecting shafts (32) for guiding the feeding path of the stamping sheet; A guiding and positioning mechanism (4), the guiding and positioning mechanism (4) includes two groups of punching heads (41) arranged inside the upper die base (21) and two groups of guiding pins (42) arranged inside the upper movable plate (23), and alternating components are provided on the two groups of punching heads (41) and the two groups of guiding pins (42) respectively for alternately using the two groups of punching heads (41) and the two groups of guiding pins (42).

2. The continuous stamping die for a dishwasher hinge according to claim 1, wherein A guiding groove (34) is annularly formed on the guiding roller (33), and the guiding groove (34) is used for guiding and limiting the edge of the stamping sheet.

3. The continuous stamping die for a dishwasher hinge according to claim 1, characterized in that Limit frames (35) are installed on two of the guiding rollers (33), and the limit frames (35) are used for guiding and limiting the stamping sheet in the up and down directions.

4. A continuous stamping die for a dishwasher hinge according to claim 1, characterized in that, The alternating component includes brackets (43) respectively arranged on the upper template (22) and the upper movable plate (23), and a connecting rod (44) is rotatably connected to the brackets (43) through a rotating shaft. Sliding grooves (45) are formed on both sides inside the connecting rod (44), and sliding rods (46) are slidably connected in the sliding grooves (45). A connecting frame (47) is installed on the sliding rods (46), and the connecting frame (47) is fixedly connected to the corresponding punching head (41) and guiding pin (42) respectively. A connecting block (48) is also installed on the connecting frame (47).

5. A continuous stamping die for a dishwasher hinge according to claim 4, characterized in that, A first slot (221) is formed inside the upper template (22), a second slot (231) is formed inside the upper movable plate (23), the brackets (43) are respectively fixedly connected to the interiors of the first slot (221) and the second slot (231), fixing frames (49) are installed in both the first slot (221) and the second slot (231), and threaded rods (410) are rotatably connected to the fixing frames (49). Threaded sleeves (411) are threadedly connected to the threaded rods (410), and the threaded sleeves (411) are respectively fixedly connected to a corresponding group of connecting blocks (48).

6. A continuous stamping die for a dishwasher hinge according to claim 5, characterized in that, One end of each of the threaded rods (410) is provided with a gear (412), and a tooth column (413) is meshed and connected between the gears (412). A rotating shaft (414) is installed in the tooth column (413), and the rotating shaft (414) is rotatably connected to the upper template (22) through a bearing. A driving motor (415) is installed on the upper die base (21), and the output shaft of the driving motor (415) is fixedly connected to the rotating shaft (414).

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